package com.tanhua.dubbo.server.api;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.convert.Convert;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.ObjectUtil;
import com.alibaba.dubbo.config.annotation.Service;
import com.tanhua.dubbo.server.pojo.RecommendUser;
import com.tanhua.dubbo.server.pojo.Visitors;
import com.tanhua.dubbo.server.vo.PageInfo;
import lombok.extern.slf4j.Slf4j;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.redis.core.RedisTemplate;

import java.util.List;

@Service(version = "1.0.0")
@Slf4j
public class VisitorsApiImpl implements VisitorsApi{

    @Autowired
    private RedisTemplate<String,String> redisTemplate;

    @Autowired
    private MongoTemplate mongoTemplate;

    private static final String VISITOR_REDIS_KEY = "VISITOR_USER";

    @Override
    public String saveVisitor(Long userId, Long visitorUserId, String from) {
        if(!ObjectUtil.isAllNotEmpty(userId,visitorUserId)){
            return null;
        }

        String today = DateUtil.today();
        Long minDate = DateUtil.parseDateTime(today + " 00:00:00").getTime();
        Long maxDate = DateUtil.parseDateTime(today + " 23:59:59").getTime();

        Query query = Query.query(Criteria.where("userId").is(userId)
                .and("visitorUserId").is(visitorUserId)
                .andOperator(Criteria.where("date").gte(minDate),
                        Criteria.where("date").lte(maxDate)));
        long count = this.mongoTemplate.count(query, Visitors.class);
        if(count > 0){
            return null;
        }

        Visitors visitors = new Visitors();
        visitors.setFrom(from);
        visitors.setVisitorUserId(visitorUserId);
        visitors.setUserId(userId);
        visitors.setDate(System.currentTimeMillis());
        visitors.setId(ObjectId.get());

        this.mongoTemplate.save(visitors);

        return visitors.getId().toHexString();
    }

    @Override
    public List<Visitors> queryMyVisitor(Long userId) {
        // 查询前5个访客数据，按照访问时间倒序排序
        // 如果用户已经查询过列表，记录查询时间，后续查询需要按照这个时间往后查询
        Long date = Convert.toLong(this.redisTemplate.opsForHash().
                get(VISITOR_REDIS_KEY,String.valueOf(userId)));

        PageRequest pageRequest = PageRequest.of(0,5,
                Sort.by(Sort.Order.desc("date")));
        Query query = Query.query(Criteria.where("userId").is(userId))
                .with(pageRequest);
        if (ObjectUtil.isNotEmpty(date)){
            query.addCriteria(Criteria.where("date").gte(date));
        }

        List<Visitors> visitorsList = this.mongoTemplate.find(query, Visitors.class);
        //该循环是为了拼凑访问用户的缘分值
        /*for (Visitors visitors : visitorsList) {
            Query queryScore = Query.query(Criteria.where("toUserId").is(userId)
            .and("userId").is(visitors.getUserId()));
            RecommendUser recommendUser = this.mongoTemplate.findOne(queryScore, RecommendUser.class);
            if(ObjectUtil.isNotEmpty(recommendUser)){
                visitors.setScore(recommendUser.getScore());
            }else {
                //系统默认得分
                visitors.setScore(90D);
            }
        }*/

        return visitorsList;

    }

    @Override
    public PageInfo<Visitors> topVisitor(Long userId, Integer page, Integer pageSize) {
       PageRequest pageRequest = PageRequest.of(page-1,pageSize,
               Sort.by(Sort.Order.desc("created")));
       Query query = Query.query(Criteria.where("userId").is(userId)).with(pageRequest);

        List<Visitors> visitorsList = this.mongoTemplate.find(query, Visitors.class);
        //该循环是为了拼凑访问用户的缘分值
        for (Visitors visitors : visitorsList) {
            Query queryScore = Query.query(Criteria.where("toUserId").is(userId)
                    .and("userId").is(visitors.getUserId()));
            RecommendUser recommendUser = this.mongoTemplate.findOne(queryScore, RecommendUser.class);
            if(ObjectUtil.isNotEmpty(recommendUser)){
                visitors.setScore(recommendUser.getScore());
            }else {
                //系统默认得分
                visitors.setScore(90D);
            }
        }

        PageInfo pageInfo = new PageInfo();
        pageInfo.setPageNum(page);
        pageInfo.setPageSize(pageSize);
        pageInfo.setRecords(visitorsList);

        //存入redis中 为了刷新最近访客信息
        String redisKey = VISITOR_REDIS_KEY;
        String hashKey = String.valueOf(userId);
        String value = String.valueOf(System.currentTimeMillis());
        this.redisTemplate.opsForHash().put(redisKey,hashKey,value);

        return pageInfo;
    }
}
